Two recent independent polls have again placed Democrat incumbent Sen. Mark Udall behind Republican opponent Rep. Cory Gardner in tipping point purple state Colorado.

The two polls, one from Monmouth University and the other from the Democratic Public Policy Polling (PPP) has Gardner in the lead with 47-46 and 46-43 percent, respectively.  The results are mostly unchanged from last month's polls which have favored the GOP candidate an average of 3.4 percent.

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Democrats, however, have paid no mind to these public polls and are instead pushing for two other surveys by Democratic pollsters Mark Mellman and Joel Benenson which have placed Udall in the lead by 3 percent.

While history has proven polling in Colorado tends to overestimate Republican support like in the 2010 Senate and 2012 presidential races, Gardner's continued victories may have already gone beyond polls' margins for error.

Based on FiveThirtyEight's latest forecast, Gardner's chances this November has risen 80 percent.

Democrats have argued that Latino turnout could tip the polls in their favor. According to the Benenson poll, Udall had won over Gardner 22 percent among Latinos while the last five polls released in Colorado placed him ahead 28 percent.

Likewise, a Wednesday Suffolk poll found Udall winning favor among Latinos 73 percent.

Nevertheless, the five public polls, which used likely voter samples an average of 79.9 percent white and 11.3 percent Hispanic, still found Gardner leading overall an average of 4.4 percent.

It must be noted that the Mellman and Benenson polls touted by Dems projected a lower likely voter Hispanic ratio with 79 percent white, 9 percent Latino and 84 percent white, 9 percent Latino, respectively.

Perhaps the major difference between the public surveys and the Mellman and Benenson polls is tied to Gardner's popularity among white voters. In the last five polls, Gardner won on average, 10.6 percent and was tied with Udall in the Benenson poll among likely white voters.

White voters comprise majority of the electorate and translates to 8.4 percent in overall samples.

TagsColorado polls, GOP, Democrats, Cory Gardner, Mark Udall, midterm elections, U.S. election